Stropping device.



J. A. HARRIEEGTGN.

STROPPING DEVICE.

APPLICATION FILED JUNE 1, 1911.

anti

i new and i set Im Dev ces, .,of which "fi'cat onf which the stroppin"drums hav ng a,su

QJosEPH A;

srArEs PATENT OFFICE- HARRINGTON, or sort HALF T MIC H EL J. Lvnolv,

Specification of [o all whom git-may concert:

' 'j'Be" it 'k'noivnthat I, J o EPH 1-. HARRIXG- 'i'on, a" citizen of.the Unit (1 St ates, residing at SouthIBoston, in the ounty of Suffolk a1rd Sti ts of Mass i provements hr Stropping the following is aspecirelates to improvements in shopping devices of that class in gsurface *onsists of itably prepared surface 'Th'is invention razor andwhile the presentembodiment of my in- 1 On." e ther: the drums f w ththe reve the blad 5 simple, convenient an v ce b j m' "s i ened ni'eratetl actuating member alternat posite direc'tions and by such ro bla'de may presented to the stro its application thereto,

arly adapted for stropety ra'zor blades and especially dge'iblade s, thedevice is readily double e *muamekltmarer classes of blades.

The object of my invention is to provide l d efiective stropping ansoflwhich a blade may be Otating a suitable manually opel vin op tationthe pping surfacesfirst; on one face and then andjthedirection ofrotation of hall be .changed automatically rsal of the blade. than;invention consists in the es of construction and in the it'aice or: sur

---c6inbi1iationandarrangement of parts set 1 qt'tirth 1n the followingspeclfication and particularly pointed ou' in the claims.

-''Referriiig to tl1e drawings: Figure 1 is a "plan of a"'razorstropping device embodyingmyinvention, Fig.- 2 is a front elevation-ofthe stropp'er; Fig. 3 is a sectional view taken on the line 33 of Fig.1, looking toward the right] Fig. 4 is a sectional view taken oniine4-'l of Fig. 1, showing e in the same position as that in which it isshown in Fig. 1. Fig. 5 is a sectional view also taken on line 4.l ofFig. 1, showing the blade reversed.

Like numerals refer to like parts throughout the several views of thedrawings.

In the drawings, G'is a razor blade which may be of any usual or desiredtype and which, in the present instance, is shown as being of the doubleedge type. It will be distinctly understood,.however, that the device,while particularly desirable for stropping this type of blade, is notlimited in but may be used for ropping single edge-blades. The blade is'mounted on andisecured i achusets, have invented I om;- or rosron,MASSACHUSETTS. V I

srRorrI'NG DEVICE.

Letters Patent.

manner to a suitable is mounted to rock ab hearings provided in the fra'Also journaled in suitable bearings in the frame 8,,1 provide a pairofstropping drums, which are designated by numbers 9 and 10. Preferably,the blade andits holder are mounted between the drumsin such a mannerthat as the blade is rocked ton-nil fro both sides of ,both edges of theblade will be stropped without removingthe blade from the holder andreversing the same. i

To operate the blade holder and the drums, I- provide a suitablemanually op eratable actuatingmember 11 consisting of a wheel iourna'ledon the blade holder 7 and provided with a crank 13. This crank may be ordetachably attached-t preferably the latter, in the present .instancwheel as being provided with lateral projecting pins 1%, 14 fitting intor e respectively, provided in the crank 12. The wheel 11 is connectedwith the drums 9' and 10 to rotate the same and for-this purpose Iemploy suitable gearing pr-eferab y of the meor casing 8.-

either permanently o the wheelll and and for this purpose, e, I haveshown said spur type so that the driving connection be-' journaled onstuds ms the proper rotation to correspond with the positions assuinedbythe blade with-respect thereto'fTThe wheel 11, which constitutes thedriving member, is connected to the bladeholder by suitable frictionalrotary driving means which, inthe "present instance, consists of aspring. washer 25 interposed. between the wheel 11 and a collar 26 fixedon the holder 7. The

riction of the driving proper amount of f surfaces is obtained by meansof an adjusting nut 97 having screw-th'readed engageand an adment withthe blade holder 7 screw 28, the head of justment locking against saidnut and locks. the

which bears 7 same after it has been properly adjusted.

n any suitableblade holder 7' which." out an axis in suitable 'idlergears Patented June 17, 1 913.

Application filed June 1; 1911. Serial No. 630,573.

12 having {lj' handle cesses 15. 15.

of these intermediate "The operation" of the stropping deviceliereinbefore specifically describedis as follows: Assuming that theblade is in place on the holder with the crank 13 attached to the wheell1, the user holds the frame or easing 8 in one handjor places the sameupon a suitable support and with the otherhand grasps the handle 13. 'Hethen rotates said rhandle alternately in opposite directions,

preferably'several rotations in each dircc-' 't1 o11. Assuming that atthe start, thecblade occupies the position shown in Fig. 4c. and

the handle is rotated clockwise, Fig. 2, it will be evident that thedrums 9 and .10 will be positively rotated by reason of the gearingconnecting the same to the driving gear 1.6,whileat the same time sincethe connection between the gear 16 and the blade holder? is' a-slippin'gdriving connection, a slipping *action will immediately take'place,since the blade is in connection with the drums 9 and-10, and it will beevident that this frictional driving connection which'has' just beenreferred to forms a meansior furnishing the desired pressure of't heblade against thestrop'pingdrums.

I If now, after several turns of the handlein a; clockwise direction,the direction. of the handle'be reversed-itwill be evident that .theposition-- of the blade will be reversed,

since the blade will move freely across the intervening. space betweenthe drums until the blade-occupies the position shown in Fig. ,5,whereupon the blade encountering the drums, ceases to rotate, is heldwith the *p'ropenpressurelagainst the drums, and the drums are thenrotated inan opposite direc -tion for, in other words, counterclockwise.

The operator continues to rotate the handle alternately in oppositedirections until the blade has been sutficiently stropped, after whichthe blade may be removed from its qholder.

-Ha vi-ng thus I claim and desire by LettersPatent to secure'isi i a 1.A stropping device having, in combi- "nation, a pair of journaled drums,a holder for a two-edged blade mounted to rock described my invention,what about an axis "ntermediate said drums and adapted rry the oppositeedges of said blade d out of contact with said drums alt ,ely, a rotaryactuating element rotatably mounted-upon said holder, means forminga,sl1pping driving connection between said elementand said holder andmeans forming a positive driving con-' nectlon between $316. element andsaid drums.

2., A stropping device having, in combitively rotatedand the oppositeedges of said .60 nation, a pair of journaled drums, aholder for atwo-edged blade. mounted to rock about. an axis intermediate said drumsand.

blade may be simultaneously held with a yielding pressure against theperipheries of said drums. I v

3, A stropping device havlng, 1n combination, a pair of Ournaled drums,a blade- ;h'older mounted to rockabout an axis between and located. inthe plane containing the axes of the said drums to carry the blade intoand out of contact with'saiddrums alternately, a wheel adapted to.rotate about the axis of said holder having frictiona'l rotary drivingconnection with said holder, manually operable,- driving. means for saidwheel and gearing connecting said wheel. to said drums, saidgearlngincluding of said drums travel away from the cutting edge of said blade.

' In testimonylwhereof I have hereunto set my hand in presence 10f ,twosubscribing witnesses.

' JOSEPH A. HARRINGTON. lVitnesses LOUIS A. JONES,

SYDNEY Y E. TAFT.

intermediate gears whereby the peripheries

